<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button @click="showAddCateDialog" type="primary"
            >添加分类</el-button
          >
        </el-col>
      </el-row>
      <!-- 表格 -->
      <tree-table
        :selection-type="false"
        :data="cateList"
        :columns="columns"
        :expand-type="false"
        :show-index="true"
        index-text="#"
        border
        :show-row-hover="false"
        class="treeTable"
      >
        <template slot="isok" slot-scope="scope">
          <i
            style="color: lightgreen"
            v-if="!scope.row.cat_deleted"
            class="el-icon-success"
          ></i>
          <i v-else class="el-icon-error"></i>
        </template>
        <template slot="order" slot-scope="scope">
          <el-tag size="mini" v-if="scope.row.cat_level === 0">一级</el-tag>
          <el-tag
            size="mini"
            v-else-if="scope.row.cat_level === 1"
            type="success"
            >二级</el-tag
          >
          <el-tag size="mini" v-else type="warning">三级</el-tag>
        </template>
        <template slot="opt" slot-scope="scope">
          <el-button
            @click="showEditDialog(scope.row.cat_id)"
            size="mini"
            type="primary"
            icon="el-icon-edit"
            >编辑</el-button
          >
          <el-button
            @click="open(scope.row.cat_id)"
            size="mini"
            type="danger"
            icon="el-icon-delete"
            >删除</el-button
          >
        </template>
      </tree-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[3, 5, 10, 15]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加分类对话框 -->
    <el-dialog
      title="添加分类"
      :visible.sync="addCateDialogVisible"
      width="50%"
      @close="addCateDialogClosed"
    >
      <el-form
        :model="addCateForm"
        :rules="addCateFormRules"
        ref="addCateFormRef"
        label-width="100px"
      >
        <el-form-item label="分类名称" prop="cat_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类">
          <el-cascader
            v-model="selectedKeys"
            :options="parentCateList"
            :props="cascaderProps"
            @change="parentCateChange"
            clearable
          ></el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改分类 -->
    <el-dialog title="修改分类" :visible.sync="editDialogVisible" width="50%">
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="100px"
        @close="editDialogClosed"
      >
        <el-form-item label="分类名称" prop="cat_name">
          <el-input v-model="editForm.cat_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Cate",
  data() {
    return {
      cateList: [],
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5,
      },
      total: 0,
      columns: [
        {
          label: "分类名称",
          prop: "cat_name",
        },
        {
          lable: "是否有效",
          type: "template",
          template: "isok",
        },
        {
          lable: "排序",
          type: "template",
          template: "order",
        },
        {
          lable: "操作",
          type: "template",
          template: "opt",
        },
      ],
      addCateDialogVisible: false,
      addCateForm: {
        cat_name: "",
        cat_pad: 0,
        cat_level: 0,
      },
      addCateFormRules: {
        cat_name: [
          {
            required: true,
            message: "请输入分类名称",
          },
        ],
      },
      parentCateList: [],
      cascaderProps: {
        expandTrigger: "hover",
        checkStrictly: "true",
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      selectedKeys: [],
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        cat_name: [
          { required: true, message: "请输入分类名", trigger: "blur" },
          {
            min: 3,
            max: 5,
            message: "长度在 3 到 5 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200) return this.$message.error("请求失败");
      this.cateList = res.data.result;
      this.total = res.data.total;
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getCateList();
    },
    handleCurrentChange(newSize) {
      this.queryInfo.pagenum = newSize;
      this.getCateList();
    },
    showAddCateDialog() {
      this.getParentCateList();
      this.addCateDialogVisible = true;
    },
    async getParentCateList() {
      const { data: res } = await this.$http.get("categories", {
        params: {
          type: 2,
        },
      });
      if (res.meta.status !== 200) return this.$message.error("请求失败");
      this.parentCateList = res.data;
    },
    parentCateChange() {
      if (this.selectedKeys.length > 0) {
        this.addCateForm.cat_pad =
          this.selectedKeys[this.selectedKeys.length - 1];
        this.addCateForm.cat_level = this.selectedKeys.length;
        return;
      } else {
        this.addCateForm.cat_pad = 0;
        this.addCateForm.cat_level = 0;
      }
    },
    addCate() {
      this.$refs.addCateFormRef.validate(async (config) => {
        if (!config) return;
        const { data: res } = await this.$http.post(
          "categories",
          this.addCateForm
        );
        if (res.meta.status !== 201) return this.$message.error("请求失败");
        this.$message.success("请求成功");
        this.getCateList();
        this.addCateDialogVisible = false;
      });
    },
    addCateDialogClosed() {
      this.$refs.addCateFormRef.resetFields();
      this.selectedKeys = [];
      this.addCateForm.cat_level = 0;
      this.addCateForm.cat_pad = 0;
    },
    async open(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((error) => error);
      if (confirmResult !== "confirm") return this.$message.info("已取消删除");
      const { data: res } = await this.$http.delete(`categories/${id}`);
      if (res.meta.status !== 200) return this.$message.error("请求失败");
      this.$message.success("删除成功");
      this.getCateList();
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`categories/${id}`);
      if (res.meta.status !== 200) return this.$message.error("查询用户失败");
      this.editDialogVisible = true;
      this.editForm = res.data;
    },
    editRoleInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.put(
          `categories/${this.editForm.cat_id}`,
          {
            cat_name: this.editForm.cat_name,
          }
        );
        if (res.meta.status !== 200) return this.$message.error("更新信息出错");
        this.editDialogVisible = false;
        this.getCateList();
        this.$message.success("更新角色信息成功");
      });
    },
  },
};
</script >

<style lang="less">
.treeTable {
  margin-top: 15px;
}
.el-cascader {
  width: 100%;
}
</style>